You are on a field trip to a nearby lake for biology class and want to perform a quick analysis of the water’s approximate ph level. which ph measurement system would you use and why?

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

Compare and contrast the bohr model and the electron cloud models of the atom.

Compare and contrast solutions and suspensions